CN202869696U - Fiber optic temperature sensor - Google Patents
Fiber optic temperature sensor Download PDFInfo
- Publication number
- CN202869696U CN202869696U CN201220611320.7U CN201220611320U CN202869696U CN 202869696 U CN202869696 U CN 202869696U CN 201220611320 U CN201220611320 U CN 201220611320U CN 202869696 U CN202869696 U CN 202869696U
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- China
- Prior art keywords
- fiber
- temperature sensor
- socket
- coupling
- optic temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000000835 fiber Substances 0.000 title claims abstract description 130
- 230000008878 coupling Effects 0.000 claims abstract description 59
- 238000010168 coupling process Methods 0.000 claims abstract description 59
- 238000005859 coupling reaction Methods 0.000 claims abstract description 59
- 239000013307 optical fiber Substances 0.000 claims abstract description 35
- 239000010453 quartz Substances 0.000 claims abstract description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000919 ceramic Substances 0.000 claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 229910052697 platinum Inorganic materials 0.000 abstract description 3
- 229910052703 rhodium Inorganic materials 0.000 abstract description 3
- 239000010948 rhodium Substances 0.000 abstract description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 abstract description 3
- 238000009529 body temperature measurement Methods 0.000 abstract description 2
- 238000007598 dipping method Methods 0.000 abstract 2
- 239000010970 precious metal Substances 0.000 abstract 1
- 239000003708 ampul Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000510 noble metal Inorganic materials 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229960004424 carbon dioxide Drugs 0.000 description 2
- 229910002090 carbon oxide Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 238000002314 autoradiolysis reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- -1 pottery Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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- Radiation Pyrometers (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model provides a fiber optic temperature sensor, and relates to a temperature measurement method based on emitting light. The fiber optic temperature sensor is a sensor for measuring the temperature of fibers by dipping the fibers into a metallic solution in a noncontact way. The fiber optic temperature sensor comprises a quartz protecting pipe, optical fibers, a ceramic protecting sleeve, a fiber coupling socket and a fiber measuring rod protecting pipe; the optical fibers are placed in the center of the fiber coupling socket; part of the optical fibers is kept at the inner part of the fiber coupling socket while another part is kept at the outer part of the fiber coupling socket; the fiber coupling socket is adhered on the ceramic protecting sleeve; the fiber coupling socket and partial ceramic protecting sleeve are encapsulated into the fiber measuring rod protecting pipe; the other part of the ceramic protecting sleeve outwards exposes on the outer surface of the fiber measuring rod protecting pipe; the optical fibers at the outer part of the fiber coupling socket are sleeved with the quartz protecting pipe, and the quartz protecting pipe is fixed on the fiber coupling socket. By adopting the fiber optic temperature sensor, the shortcomings that the conventional dipping type fast thermocouple adopts non-renewable precious metals which are respectively the platinum and the rhodium, the resulting cost is high, and the conventional noncontact type infrared temperature measuring instrument brings relatively high measurement error during measuring, can be overcome.
Description
Technical field
The technical solution of the utility model relates to the hygrometry that utilizes radiant light, specifically fibre optic temperature sensor.
Background technology
The pyrostat that is used in the market measurement molten metal temperature mainly contains two kinds: a kind of is the immersion-type fast thermocouple, and another kind is contactless infrared thermometer.
The immersion-type fast thermocouple is a kind of sensor that measures 1800 ℃ of high temperature, mainly is comprised of U-shaped quartz ampoule, platinum rhodium thermocouple silk, copper-coppernickel compensating conductor, ceramic sheath and plastic socket.When measuring temperature with the immersion-type fast thermocouple, be that U-shaped quartz ampoule is immersed in the tested molten metal, the platinum rhodium thermocouple silk generation thermoelectrical potential of being heated in the U-shaped quartz ampoule, the copper-coppernickel compensating conductor through being fixed on the plastic socket reaches temperature instrumentation with thermoelectrical potential.This sensor has used non-renewable noble metal platinum and rhodium, so that the production cost of this sensor is very high.
Non-contacting Infrared Thermometer collects in the optical fiber with the light wave of convex lens with the testee emission, is transferred to infrared thermometer.Because this metering system is contactless, the coefficient of blackness that flue dust, dust and the carbonoxide concentration change that exists in the air between the camera lens of infrared thermometer and testee causes changes, all can cause the generation of measuring error, so Non-contacting Infrared Thermometer is measured the temperature error of molten metal up to the double figures magnitude.
The utility model content
Technical problem to be solved in the utility model is: fibre optic temperature sensor is provided, be a kind of optical fiber is immersed in the molten metal but directly the contacting metal liquation measure the sensor of its temperature, both overcome existing immersion-type fast thermocouple and used non-renewable platinum rhodium noble metal and the high shortcoming of production cost, and overcome again existing Non-contacting Infrared Thermometer and when measuring, produced the greatly shortcoming of measuring error because of the external environmental condition variation.
The utility model solves this technical problem the technical scheme that adopts: fibre optic temperature sensor; be a kind of optical fiber is immersed in the molten metal but directly the contacting metal liquation measure the sensor of its temperature; by quartz protecting tube; light transmitting fiber; the pottery sheath; coupling fiber socket and optical fiber measuring staff protection tube consist of; light transmitting fiber is installed in the center of coupling fiber socket; this fibre-optic part is inner at the coupling fiber socket; another part is outside at the coupling fiber socket; the coupling fiber socket is bonded on the ceramic sheath; it is inner that the ceramic sheath of coupling fiber socket and part is encapsulated in optical fiber measuring staff protection tube; another part pottery sheath is the outer optical fiber measuring staff protection tube outside that is exposed at then; quartz protecting tube is enclosed within on the light transmitting fiber of coupling fiber socket outside, and is fixed on the coupling fiber socket.
Above-mentioned fibre optic temperature sensor, the external diameter of described quartz protecting tube are that 2～6mm, wall thickness are that 0.3～2mm, length are 20～120mm.
Above-mentioned fibre optic temperature sensor, described light transmitting fiber are large core fiber, and core diameter is 200～1000um, and length is 30～120mm, and the fibre-optic length that is exposed at ceramic sheath exterior portion is 10～100mm.
Above-mentioned fibre optic temperature sensor, the external diameter of described ceramic sheath are 20～30mm, and the thickness that is exposed at optical fiber measuring staff protection tube exterior portion outward is 6～10mm.
Above-mentioned fibre optic temperature sensor, described coupling fiber socket are the coupling sockets of FC, SC or LC form.
Above-mentioned fibre optic temperature sensor, related parts and material are all by commercially available, and the installation method of parts is that those skilled in the art grasp.
The beneficial effects of the utility model are:
Compared with prior art, one of outstanding substantive distinguishing features of the utility model fibre optic temperature sensor is, the anti-electromagnetic interference (EMI) of Fibre Optical Sensor and to the good insulating of electricity, because the signal that transmits in the optical fiber is light signal, namely be used in the rugged surroundings such as high voltage, high-intensity magnetic field, strong electromagnetic radiation also interference-free, do not produce again spark, explosion caused or burning, safe and reliable, therefore having overcome existing thermocouple sensor can't solve environmental interference and the unsafe problem of being subjected to.In addition, because the utility model fibre optic temperature sensor is immersion, directly with by the thermometric object contact, avoid the interference of absorbing medium in the environment and the interference of measuring distance, guaranteed the accuracy of measuring, therefore overcome existing contactless high-temperature infrared temperature measurer and when measuring, produced the greatly shortcoming of measuring error because of the external environmental condition variation.
Compared with prior art, the marked improvement of the utility model fibre optic temperature sensor is:
(1) the utility model fibre optic temperature sensor does not use the non-renewable metals resources such as the noble metals such as platinum, rhodium and tungsten, rhenium, copper, nickel, has the advantage that economizes on resources, and meets the requirement of national development strategy.
(2) the utility model fibre optic temperature sensor adopts impregnated thermometric mode, having got rid of the coefficient of blackness that the flue dust, dust and the carbonoxide concentration change that exist in the air between the camera lens of Non-contacting Infrared Thermometer and the testee cause changes, the thermometric error that causes makes the thermometric error of infrared optical fiber less than F.S 0.1%.
(3) even if the utility model fibre optic temperature sensor is used in the rugged surroundings such as high humidity, high temperature, high voltage, high-intensity magnetic field, strong electromagnetic radiation also can not be interfered, and do not produce spark, cause burning or blast, safe and reliable.
(4) the coupling fiber socket in the utility model fibre optic temperature sensor guarantees that fibre optic temperature sensor is under the quick-replaceable condition, light transmitting fiber in light transmitting fiber wherein and the infrared thermometer one end optical fiber coupling plug is coupled, and light transmitting fiber and the fibre-optic coupling efficiency of infrared thermometer one end in this fibre optic temperature sensor are reached more than 90%.
(5) the utility model fibre optic temperature sensor has used the coupling fiber socket of FC, SC or LC form, has realized changing simply and fast fibre optic temperature sensor; Use the cheap materials such as quartz, optical fiber, pottery, plastics, cement to reduce production cost.
When (6) measuring the molten metal temperature, light transmitting fiber is the contacting metal liquation not, and in the scope of optical fiber measuring staff protection tube life-span permission, fibre optic temperature sensor can repeatedly use, and therefore fibre optic temperature sensor can be made into the expendable temperature sensor.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is that the utility model fibre optic temperature sensor consists of schematic diagram.
Among the figure, 1. quartz protecting tube, 2. light transmitting fiber, 3. ceramic sheath, 4. coupling fiber socket, 5. optical fiber measuring staff protection tube.
Embodiment
Embodiment illustrated in fig. 1 showing; the utility model fibre optic temperature sensor is by quartz protecting tube (1); light transmitting fiber (2); pottery sheath (3); coupling fiber socket (4) and optical fiber measuring staff protection tube (5) consist of; light transmitting fiber (2) is installed in the center of coupling fiber socket (4); the part of this light transmitting fiber (2) is in coupling fiber socket (4) inside; another part is in coupling fiber socket (4) outside; coupling fiber socket (4) is bonded on the ceramic sheath (3); coupling fiber socket (4) and the ceramic sheath of part (3) are encapsulated in optical fiber measuring staff protection tube (5) inside; another part pottery sheath (3) is outer optical fiber measuring staff protection tube (5) outside that is exposed at then; quartz protecting tube (1) is enclosed within on the outside light transmitting fiber (2) of coupling fiber socket (4), and quartz protecting tube (1) is fixed on the coupling fiber socket (4).
Below among all embodiment fibre optic temperature sensor all so make: the center that at first light transmitting fiber (2) is installed in coupling fiber socket (4); the part of this light transmitting fiber (2) is in coupling fiber socket (4) inside; another part is in coupling fiber socket (4) outside; again coupling fiber socket (4) is bonded on the ceramic sheath (3); pottery sheath (3) assurance is fixed on quartz protecting tube (1) and light transmitting fiber (2) the axial centre position of coupling fiber socket (4); quartz protecting tube (1) is enclosed within on the outside light transmitting fiber (2) of coupling fiber socket (4); quartz protecting tube (1) is fixed on the coupling fiber socket (4); at last with cement with light transmitting fiber (2); quartz protecting tube (1); pottery sheath (3) and coupling fiber socket (4) encapsulate; after the drying coupling fiber socket (4) and the ceramic sheath of part (3) are encapsulated in optical fiber measuring staff protection tube (5) inside; another part pottery sheath (3) is outer optical fiber measuring staff protection tube (5) outside that is exposed at then, namely makes fibre optic temperature sensor.
Below among all embodiment the using method of fibre optic temperature sensor all be: the present embodiment fibre optic temperature sensor is connected to become the optical fiber temperature-measurement device by an optical fiber coupling plug and optical fiber measuring staff and infrared thermometer.
When measuring the molten metal temperature that the quartz protecting tube (1) of the present embodiment fibre optic temperature sensor is downward; exposed parts in optical fiber measuring staff protection tube (5) outside is immersed in the high-temperature metal liquation fully with quartz protecting tube (1) and ceramic sheath (3); so that light transmitting fiber (2) as early as possible obtain the high temperature balance; send the autoradiolysis ripple; and make light transmitting fiber (2) gather more fully the radiant light of this molten metal; the molten metal and the hyperthermia radiation heat that are stopped splash by optical fiber measuring staff protection tube (5) are in case coupling fiber socket (4); the optical fiber coupling plug and the optical fiber measuring staff that connect infrared thermometer are burnt.After the light transmitting fiber in the optical fiber measuring staff of light transmitting fiber (2) through connecting infrared thermometer sends signal to the temperature value that infrared thermometer becomes demonstration, namely finished the measurement of above-mentioned molten metal temperature, then this fibre optic temperature sensor has been extracted from above-mentioned molten metal.
Embodiment 1
In the used fibre optic temperature sensor of the present embodiment, the external diameter of quartz protecting tube (1) is that 2mm, wall thickness are that 0.3mm, length are 20mm; The core diameter of light transmitting fiber (2) is that 200um, total length are 30mm, and the length that is exposed at the light transmitting fiber (2) of ceramic sheath (3) exterior portion is 10mm; The external diameter of pottery sheath (3) is 20mm, and ceramic sheath (3) keeps the thickness that exposes of 6mm in measuring staff protection tube (5) outside; Coupling socket (4) is the coupling socket of FC form.
In the used fibre optic temperature sensor of the present embodiment, the external diameter of quartz protecting tube (1) is that 4mm, wall thickness are that 1mm, length are 65mm; The core diameter of light transmitting fiber (2) is 600um, and total length is 80mm, and the length that is exposed at the light transmitting fiber (2) of ceramic sheath (3) exterior portion is 50mm; The external diameter of pottery sheath (3) is 25mm, and ceramic sheath (3) keeps the thickness that exposes of 8mm in measuring staff protection tube (5) outside; Coupling socket (4) is the coupling socket of SC form.
In the used fibre optic temperature sensor of the present embodiment, the external diameter of quartz protecting tube (1) is that 6mm, wall thickness are that 2mm, length are 120mm; The core diameter of light transmitting fiber (2) is 1000um, and total length is 120mm, and the length that is exposed at the light transmitting fiber (2) of ceramic sheath (3) exterior portion is 100mm; The external diameter of pottery sheath (3) is 30mm, and ceramic sheath (3) keeps the thickness that exposes of 10mm in measuring staff protection tube (5) outside; Coupling socket (4) is the coupling socket of LC form.
Claims (5)
1. fibre optic temperature sensor; it is characterized in that: be a kind of optical fiber is immersed in the molten metal but directly the contacting metal liquation measure the sensor of its temperature; by quartz protecting tube; light transmitting fiber; the pottery sheath; coupling fiber socket and optical fiber measuring staff protection tube consist of; light transmitting fiber is installed in the center of coupling fiber socket; this fibre-optic part is inner at the coupling fiber socket; another part is outside at the coupling fiber socket; the coupling fiber socket is bonded on the ceramic sheath; it is inner that the ceramic sheath of coupling fiber socket and part is encapsulated in optical fiber measuring staff protection tube; another part pottery sheath is the outer optical fiber measuring staff protection tube outside that is exposed at then; quartz protecting tube is enclosed within on the light transmitting fiber of coupling fiber socket outside, and is fixed on the coupling fiber socket.
2. described fibre optic temperature sensor according to claim 1, it is characterized in that: the external diameter of described quartz protecting tube is that 2～6mm, wall thickness are that 0.3～2mm, length are 20～120mm.
3. described fibre optic temperature sensor according to claim 1, it is characterized in that: described light transmitting fiber is large core fiber, and core diameter is 200～1000um, and length is 30～120mm, and the fibre-optic length that is exposed at ceramic sheath exterior portion is 10～100mm.
4. described fibre optic temperature sensor according to claim 1, it is characterized in that: the external diameter of described ceramic sheath is 20～30mm, the thickness that is exposed at optical fiber measuring staff protection tube exterior portion outward is 6～10mm.
5. described fibre optic temperature sensor according to claim 1, it is characterized in that: described coupling fiber socket is the coupling socket of FC, SC or LC form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220611320.7U CN202869696U (en) | 2012-11-19 | 2012-11-19 | Fiber optic temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220611320.7U CN202869696U (en) | 2012-11-19 | 2012-11-19 | Fiber optic temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202869696U true CN202869696U (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220611320.7U Expired - Lifetime CN202869696U (en) | 2012-11-19 | 2012-11-19 | Fiber optic temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202869696U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111060214A (en) * | 2019-12-24 | 2020-04-24 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Fiber grating temperature measurement sensor and temperature measurement method of inner conductor of radio frequency cable |
| US20210239907A1 (en) * | 2019-12-12 | 2021-08-05 | Korea Advanced Institute Of Science And Technology | Ring resonator and manufacturing method thereof |
-
2012
- 2012-11-19 CN CN201220611320.7U patent/CN202869696U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210239907A1 (en) * | 2019-12-12 | 2021-08-05 | Korea Advanced Institute Of Science And Technology | Ring resonator and manufacturing method thereof |
| US12007606B2 (en) * | 2019-12-12 | 2024-06-11 | Korea Advanced Institute Of Science And Technology | Ring resonator and manufacturing method thereof |
| CN111060214A (en) * | 2019-12-24 | 2020-04-24 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Fiber grating temperature measurement sensor and temperature measurement method of inner conductor of radio frequency cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180808 Address after: 300409 79 Huashi Road, Beichen science and Technology Park, Tianjin Patentee after: TIANJIN HUIFENG METAL DETECTION Co.,Ltd. Address before: 300384 Tianjin Binhai New Area Huayuan Industrial Zone Hai Tai development six road 6 Hai Tai green industrial base J-316 room Patentee before: Tianjin Puruisaisi Software Development Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |
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| CX01 | Expiry of patent term |